Car roof



Dec. 25, 1923.

C.D.BONSALL CAR ROOF Filed Jan. 18, 1.922

iPntented lilies. 191323 srarss I 1 al 59.1

CHARLES DAVID B019 sent, OF EITTSIBURGH, PENNSYLVANIA, ASSIGIBTGR 330 iii. H. MUH- PHY COMEANY, OF NEW KENSINGTQN, EENNSYLVANIA, A OI? PENN- SYLVANEQ.

one noor.

Application filed. January 125, 19. 32 Serial lilo 53%,1279.

To all 1071 am it may concern:

Be it known that l, CHARLES DAVID Born SALL, a citizen of the United States, and a resident of the city of Pittsburgh county of Allegheny, and State of Pennsylvania, have invented a. new and useful improve ment in Car Roofs, of'which the following is a specification? This invention relates to car roofs of the all-steel riveted-up type wherein self supporting roof sheets extend from side plate to side plate and have their eaves ends rigidly secured thereto and have their side margins overlapped. and. rigidly secured to gether.

One of the principal objects of the present invention is to increase the strength and rigidity of theroof by improving the sectional shape of the lapped portions of ad jacent sheets. Another object is to simplify the operation of pressing the sheets. ther objects are to reduce the weight of the roof, to simplify the construction thereof and to reduce the cost thereof. The invention consists principally in the construction hereinafter described; and it also consists in the combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawings,- which form part of this specification and wherein like vsymbols refer to like parts wherever they occur,

Fig. l is a plain view of the end portion of a car roof embodying my invention;

Fig. 2 is an enlarged transverse section through one half of the roof on the line 2-2 in Fig. 1;

Fig. 3 is a longitudinal section along the ridge line of the roof on the line 33 in F Fig. i is a detail cross-section through one of thc lap-joints on the line H in Fig. 1;

Fig. 5 is a cross-section through one of the joints at the side plate the section being taken on the line 55 in Fig. 1; and Fig. 6 is a cross-section through the side plate of the car, showing a modified 'form of eaves construction.

The roof shown in, the accompanying drawings comprises transversely arranged load-sustaining roof sheets '7, which extend from caves to eaves of the car. The root sheets are supported at their eaves ends on the outwardly projecting uppermost flanges of angle-bar side plates 8 and are rigidly secured to said flanges by rivets 9. The eaves of the sheets are provided with do pending eaves flanges 10, which overhang the outer edges oi: the top flanges of the side plates 8. The roof sheets are assembled by lapping their side marginal portions to form lap-joints l1; and the lapped portions are rigidly secured together by rows of rivets" 12. i

The roof sheets slope upwardly from the eaves towards the ridge and the overlapping merginal portion of each sheet is formed into a raised rib A. Each of these ribs comprises an upstanding web portion 13 having a lateral flange 14, which extends outwardly with relation to the body of the sheet, whereby the top of the rib is offset above the plane of the body of the sheet.

The web portion of the rib at one side margin of each sheet gradually diminishes in height from the ridge towards the eaves and the surplus metal gained thereby, by reason of the sheet being pressed from a blank of uniform width, is turned down over the outer edge of the flanged portion 14 of the rib in the form of a depending flange 15. Thus, the ribs, which are of inverted L-shaped section at the ridge, gradually change into inverted channel shaped sections on opposite sides of the ridge. As the web portions of the ribs diminish in depth froin the ridge towards the eaves,

there s at corresponding increase in the.

depth of the depending flange 15 in the same direction. The depending ange 15 of each rib by reason oi the gradually increasing depth thereof, reaches the plane of the body of the sheet at points preferably located inside of the inner faces of the side plates and is turned out outwardly in the plane of the sheet to form an outwardly extending lateral base flange 16. These flanges, by reason of the gradually decreasing height of the ribs, gradually increase in width as they approach the side plates and are secured to the body portions of adjacent shee's end to the upper flanges ot' the side pistes by rivets 9.

As shown in Figs. 1 and 2 the stiffening ribs are turned down, as 1?, over the side plates to prevent cinders from entering the open ends of the hollow bomgirder portions formed by the channel shaped eaves end cise shapes and or Wliieh also secure the outer marginal ed ings, the tops of the ribs are preferably disposed horizontal to provide horizontal souls for running boards 18. At the ends ol the car, running board saddles 19 are securedv to end plates 20 of the car by rivets AQE of no endnlost sheets to the iopdinnges oil the end plates.

The forming of the sheets with sliliening rilrs id one sideinargin only permits the use of a. die of smaller and less weia lub than would he required for simulmneously pressng u no in each margin of lhe sheets. The sheets are assembled by lapping the plain margin of one sheet and the ribbed rim-gin. of on adjacent sheet. 'lhus, atlie margins of adjacent sheets are secured io 'etlier by plain lop-joints; and thoseoints are strengthened by the ribs A which function as curlines to Withstand vertical roof louds and horizontal service strains. The forming of the eaves portions of ilie stiiicning; ribs into inverted channels having; lateral base flanges and the securing of these liaise flanges to iille body portions of the adjacent sheets results in a hollm box-girder section udzipied to resis horizontal service strains. desired, the running boards may be spaced above the stifiening ribs and supported from said ribs or from the body of ihe sheets by means of separate running hoard saddles. It may also be desirable to loco e the stiller:- ing ribs on the inside of the cur, inslcud of locating such rios on the outside of 'ihe cur as shown in the drawings.

The invention is no'li restricted to the prerengcmenls shown and de scribed. v

What I claim is:

l. A car roof comprising n plureliiy of roof sheets extending from euros to euves with their adjacent side marginal portions lapping each other and rigidly secured togetlier along a single line located far enough from the side edge of one sheet to perind the free marginal poifiion thereof beyond said line to be formed into a stiil'euing ill) Whose outer edge portion is free throughout the middle portion of the roof.

- 2. A our roofcomprisin a plurality of roof sheets extending from caves to eaves with their adjacent side marginal portions.

lapping; ouch other and rigidly secured to-' gcihcr along a single line located far enough from the side edge of one sheet to per-uni; llie free nun'ginal portion thereof beyond said line lo u; formed inio a stiffening rib, the rib living: of L-slmpcd section at the ridge 21nd of suhsiun'fially channel-shaped section at the eaves. the channel. portion of a rib of one sheet cooperating with the body poriion' oi an udjucmit sheet to. form a girder euros section.

3, A car rool comprising: :1 pluraliiy of roof sheets extending;- from eaflils lzo eaves with ilzeir adjacent nuu-ginul portions logi ping each other, llic lapping portions of adjnccnia sheets being rigidly securei'llogeilier -along a single line fur enough from the side oifllic upper sheet in pcrmifi (lie moi-gr nel portion thereof beyond seld'line to be formed into a silliening rib-whose outer: edge is ulcer of the siiect adjacent thereto except at the curves. 1

l. A car roof comprising: a plurality of roof sheets extending from eaves-to cows with their marginal portions lapping and rigidly secured together along a single line locuied far enough from the side edge of the sheel" firm; is uppermost at a joint to permit lillfi) tlree marginal portion thereof beyond said line to he 'foi nied into a siiifening rib,

the rib having a flat portion exiending llOK'lzon'lelly on opposite sides ofllie ridge and constituting a (lireci; supposl: for running boards. 4 i

5, A car roof comprising a plurality of roof sheets ex'ieudingr irons. caves to eaves with their adjacent sideniurginul portions overlapped and rigidly secured together by rivets that are located for enough from the side edge of illL overlapping marginal portion of a sheet at the ridge to Jermit the free marginal portion'of suid l seats, running boards restingon said seats, and means located entirely outside of the car for securing said running boards to said; seals. i

A roof sheet for a car roof. said roo'f Sllcel; having" :1 slrcnglhening rib formed in one side margin only, said rib sloping up,- wzrdly from theenvcs towards the ridge lio low lion 5' men to be; formed upwardly and ouiwurdly to provide and having- :I portion extending horizontally on opposiie sides of the ridge and adapted to support the runnin r boards of the roof. Signed at New lien ingion, Pm. this 13th day of January, 1922.

'CHA RLES DA Vl D B( )N SALE. 

